Recombinant lipidated dengue-4 envelope protein domain III elicits protective immunity.
Vaccine
; 32(12): 1346-53, 2014 Mar 10.
Article
in En
| MEDLINE
| ID: mdl-24486311
ABSTRACT
The combination of recombinant protein antigens with an immunostimulator has the potential to greatly increase the immunogenicity of recombinant protein antigens. In the present study, we selected the dengue-4 envelope protein domain III as a dengue vaccine candidate and expressed the protein in lipidated form using an Escherichia coli-based system. The recombinant lipidated dengue-4 envelope protein domain III folded into the proper conformation and competed with the dengue-4 virus for cellular binding sites. Mice immunized with lipidated dengue-4 envelope protein domain III without exogenous adjuvant had higher frequencies of dengue-4 envelope protein domain III-specific B cells secreting antibodies than mice immunized with the nonlipidated form. Importantly, lipidated dengue-4 envelope protein domain III-immunized mice demonstrated a durable neutralizing antibody response and had reduced viremia levels after challenge. The study demonstrates that lipidated dengue-4 envelope protein domain III is immunogenic and may be a potential dengue vaccine candidate. Furthermore, the lipidation strategy can be applied to other serotypes of dengue virus.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Viral Envelope Proteins
/
Dengue
/
Dengue Vaccines
/
Lipids
Limits:
Animals
Language:
En
Journal:
Vaccine
Year:
2014
Type:
Article